Hydration of α-pinene over zeolites and activated carbons dispersed in polymeric membranes

J. Vital, A. M. Ramos, I. F. Silva, Humberto Valente, J. E. Castanheiro

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The acid catalysed hydration of α-pinene yields a complex mixture of monoterpenes, alcohols and hydrocarbons. By controlling the reaction variables is possible to make it selective to the terpenic alcohols, namely α-terpineol. In this paper the results of the hydration reaction of α-pinene catalysed by polydimethylsiloxane (PDMS) membranes filled with zeolite USY, zeolite beta or a surface modified activated carbon, are reported. The reaction is carried out at 50°C, using aqueous acetone as solvent. The activity and selectivity towards α-terpineol of the composite membranes are compared with those of the free catalysts.

Original languageEnglish
Pages (from-to)167-172
Number of pages6
JournalCatalysis Today
Issue number1-3
Publication statusPublished - 25 Feb 2000



  • α-pinene hydration
  • Activated carbon
  • PDMS membranes
  • Zeolite beta
  • Zeolite USY

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